Odie的英语课 981 Grammar | Passive sentences 8

被动态 be + 动词过去分词be 各个时态的变化一般现在时 – am / are / is现在进行时 – is being / are being现在完成时 – has been / have been一般过去时 – was / were过去进行时 – was being / were being情态动词 will, can 等 – will be, can be 等[一般现在时]Am I invited too?我也被邀请了吗？[现在进行时]Am I being recorded?我正在被录音吗？[现在完成时]He's been hurt.他被伤害了。/他受伤了。[一般过去时]房间里有几个箱子，但我们不知道箱子里有什么。（We didn't know what was in the boxes.） They weren't label(l)ed.它们没有（被）贴标签。label 动词，贴标签[过去进行时]They were being watched carefully.他们正在被仔细观察。[情态动词]Reservations can be accepted up to 24 hours before arrival.提前至少24小时预约。reservation(s) 名词，预订，预约up to 最多，最高arrival 名词，抵达，到达（arrive 动词，抵达，到达）up to 24 hours before arrival 不超过（不晚于*）抵达前24小时* 这里是从距离“抵达前24小时”更早的时间点来讲，所以up to可以说成“不晚于”。“Up to”的基础意思是“最多，最高”，但在不同语境里会相应翻译成不同的中文。